Just a thought -- you might have an easier time finding reasonably relevant information from generator vendors (assuming vibration is your main concern).
We suspect a poorly made motor bed, where the client has serious vibe problems. So, I am looking for standards or pictures of rightly made beds to help out my client.
Here is a 1.2MB pdf file which goes through a few design options. There is some good info but it is not extremely detailed. For instance no mention of ratio of equipment weight to foundation weight.
Dare I say, find a good civil engineer??? What you found is a very, very, common problem out there and fixing it is so easy. The problem is, not fixing it correctly is even easier....Thus, problems for us all to fix....
